Helps to organize your ideas
If the sentence has changed you would have to put a period.
<em>short and simple. </em>
Too many short simple sentences can make your writing appear unsophisticated and your ideas seem disconnected.
Iambic Pentameter. It's written in Iambs (sets of one strong followed by one weak syllable), and there are five of these per line (hence pentameter). It's most commonly associated with Shakespeare.